1257682

Information

• Patent Grant
• 1257682

• References
• Source

• Patent Number

  1,257,682

• Date Filed

  Not available

• Date Issued

  Tuesday, February 26, 1918
  106 years ago

• CPC

  • G03D15/00 - Apparatus for treating processed material
  • Y10S430/139 - Defect coating

• US Classifications

  • 352 - Optics: motion pictures
  • 015 - Brushing, scrubbing, and general cleaning
  • 430 - Radiation imagery chemistry: process, composition, or product thereof